Automatic closing device for doors of railway-cars.



No.8 16,675. r EATEN'TED MAR. .12, 1 907.

v o. LEHNBRT. AUTOMATIC CLOSING DEVICE FOR DOORS'OF RAILWAY CABS;

. APPLICATION TILED OCT-2, 1908.

UNITED s'rArns PATENT OFFICE.

CARL LEHNERT, OF MARXLOH, GERMANY.

AUTOMATIC CLOSING DEVICE FOR DOORS OF RAILWAY-CARS.

Specification of Letters Patent.

Patented March 12, 1907.

A li ti fil d October 2, 1906. Serial No. 337,053.

. persons by leaning out of the windows of improperly-closed doors or byopening the doors too early, as well as to avoid robbery attacks fromoutside the train during the run of the latter.

The main advantage of the new device is that the same is actuated by thenatural wind-draft produced while the train travels.

In the accompanying drawing, Figure 1 is a viewof the new device,showing the same as mounted on a railway-car, while Fig. 2 is a view onthe face of the car fitted with the device. Figs. 3 and 4 show enlargedviews of the device in operative and inoperative position, respectively.

At each side of the railway-oar A and below the doors 0 of the same aniron rod (1 is mounted on rollers 12, so as to be capable oflongitudinal motion. Each end of the rod a is provided with abaflle-plate c, of thin sheet iron or steel, which is pivotallyconnected thereto and fixed at c by pivotal means to the face of therailway-car A. Beneath each door the rod a is provided with twowedgelike projections d (1. Corresponding with these wedge-likeprojections d d two vertical bolts f f are loosely mounted in the floore of the railwaycar A. At their lower ends these bolts are provided withrollers g g, by means of which they are adapted to slide along saidwedge-like projections, while at their upper ends collars h h areprovided and made of square shape, so as to prevent the bolts fromfalling too far below and from turning, respectively. Above the squarecollars the bolts carry the heads 0; '5, adapted i to entercorresponding grooves k k in the doors 0 of the railway-car, and thus tolock the latter.

The operation of the device is as follows: Supposing the train travelsin the direction of the arrow 90, Fig. 1 the natural wind-draft producedwill press the baffle-plates c to the left, as shown 1n Fig. 8, wherebyalso the rod a is shifted to the left along its rollers 1). Consequentlyits projections d press the bolts f upward into the door 0 of therailway-car A and lock the latter. When the train stops again, thebaffle-plates fall under the influence of their own weight back into thevertical position, and thus draw the rod a again to the righti. e., intothe inoperative position of both bolts (1 d. When the train travels inthe opposite direction, the same operation occurs, with the differenceonly that the leaffle-plates and rod are, instead of to the left,pressed to the right and the bolt (1 instead of the bolt (1 is broughtinto the locking position.

Having fully des cribed my invention, what I claim, and desire to secureby Letters Pat ent, is

A device for automatically locking the doors of railway-cars while thetrain travels, comprising in combination with the railwaycar, rods a.mounted at both sides of said car, rollers 12 mounted below said rodsand adapted to allow of the latter being moved longitudinally,baffle-plates c pivotally connected to each end of said rods and fixedby pivotal means to the face of said car, wedge-like projections (1 clprovided on said rods below the doors of said car, and vertical bolts ff movably and securely mounted in the floor of said car and capable ofbeing moved upward and of entering a groove provided in the doors ofsaid car and thus locking the latter upon said rods 0. being movedlongitudinally under the influence of the natural wind-draft producedduring the run of the train on said baflleplates, substantially asdescribed and shown.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

CARL LEI-INERT.

Witnesses WILLIAM EssENwnIN, PETER RIEBER.

